diff --git a/src/PhpSpreadsheet/Shared/Drawing.php b/src/PhpSpreadsheet/Shared/Drawing.php
index 25d6910d..4ff89595 100644
--- a/src/PhpSpreadsheet/Shared/Drawing.php
+++ b/src/PhpSpreadsheet/Shared/Drawing.php
@@ -98,7 +98,7 @@ class Drawing
      */
     public static function pixelsToPoints($pValue)
     {
-        return $pValue * 0.67777777;
+        return $pValue * 0.75;
     }
 
     /**
@@ -111,7 +111,7 @@ class Drawing
     public static function pointsToPixels($pValue)
     {
         if ($pValue != 0) {
-            return (int) ceil($pValue * 1.333333333);
+            return (int) ceil($pValue / 0.75);
         }
 
         return 0;